into effect but many students already finding them hard to swallow. cafeteria fare. now calorie-restricted some people claim their lunch doesn't fill them up. turning to youtube to make their voices heard. here's ab's jim avila. >> reporter: it's a noble effort but an abc news investigation shows the usda's new school lunch guidelines are not going down so well with many kids cross the country. america's public school students protesting the new federal war on child obesity with guidelines promoting smaller portions, fewer calories, less meat or cheese, more fruits and vegetables all aimed to curb obesity. some protests hit the internet in dramatic fashion. like this lunchtime revolt. ♪ my friends are at the corner store ♪ >> reporter: students at this kansas high school creating a viral video promoting the viral videos in their cafeteria. ♪ we are hungry >> reporter: the new rules limit elementary schoolers to 650 calories, 700 for middle schoolers and 850 for high schoolers. >> it's a different mix how you get to the calorie. based on the science, a more nutritious mix.